Nicholas had the weirdest sensation that he was floating on his back in the middle of a swimming pool. He had done this before back home - snuck out to his parent's pool in the middle of the night and just floated naked on an air mattress, looking up at the stars and jacking off.
But tonight, he looked up and couldn't see the stars. It was just dark though he swore he could hear crickets in the distance.
He soon realized he wasn't floating on an air mattress in a pool, he was lying nude on what looked like a mass of wet gray worms. A panic started to rise in him, as he tried to sit up, but the mass gently reshaped itself to keep him lying back.
He looked over at the edge of this "pool" and saw a giant black and gray squid-like figure. And it came back to Nicholas that he was on an alien ship.
"Hello?" he shouted, but the squid-like figure just watched him flounder on his back while the wormy mass undulated like waves beneath him.
The mass even sounded like waves on the shore. He felt both calm and anxious - the sound was lulling him to sleep, but his eyes darted at the mass as strands of wet tentacles were unravelling around him.
The strands wetly wound themselves around his fingers and toes, pulling him spreadeagle. He gulped at the air, worried that he'd be pulled under, but then he felt some strands nuzzle around his anus. They rolled together to form a thicker tendril and pushed in. The effect was immediate - Nicholas' face was red with embarrassment as he sprouted an erection.
He watched fascinated as a number of thin tentacles arched up around his erection, mimicking his curve, mimicking his twitching. Some moved to encircle the base of his penis, and even Nicholas was proud of how ruddy and thick his dick was looking.
Other tentacles peeled back to reveal little nostrils - small openings that oozed lubricant. These tentacles twisted around the length of his shaft, massaging his glistening organ while greasing it up with their alien lube. Then these tentacles would flare wider, like a cobra's hood and encase his dickhead in an almost transparent sticky embrace.
At this, Nicholas was gasping. He knew he was going to come soon. He lifted up his head to look at the tentacles working his dick, but soon a coil of tentacles encircled his neck to hold him down. It did not choke him, but like a secure leash, he was held in position while enjoying the odd sensation that all of his extremities - his fingers, toes and dick - were being wetly massaged and suckled on.